Coffee machine



FIG. 1 is a front-right perspective view of a coffee machine in accordance with the present design;

FIG. 2 is a front view of the coffee machine shown in FIG. 1;

FIG. 3 is a rear view of the coffee machine shown in FIG. 1;

FIG. 4 is a right side view of the coffee machine shown in FIG. 1;

FIG. 5 is a left side view of the coffee machine shown in FIG. 1;

FIG. 6 is a top plan view of the coffee machine shown in FIG. 1; and,

FIG. 7 is a bottom view of the coffee machine shown in FIG. 1.

The broken lines in the drawing depict portions of the coffee machine that form no part of the claimed design. 

CLAIM The ornamental design for a coffee machine, and shown. 